600mA, 1MHz Step-Down Converter
Typical Characteristics
Efficiency vs. Load
(V
OUT
= 3.3V; L = 10μH)
μ
100
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
1
10
100
1000
0.1
1
10
100
1000
AAT1126
(V
OUT
= 3.3V; L = 10μH)
μ
DC Regulation
Efficiency (%)
90
V
IN
= 3.9V
V
IN
= 4.2V
80
Output Error (%)
V
IN
= 4.2V
70
V
IN
= 3.9V
60
0.1
Output Current (mA)
Output Current (mA)
Efficiency vs. Load
(V
OUT
= 2.5V; L = 10μH)
μ
100
(V
OUT
= 2.5V; L = 10μH)
μ
3.0
DC Regulation
V
IN
= 3.3V
Efficiency (%)
90
Output Error (%)
2.0
1.0
0.0
-1.0
-2.0
-3.0
V
IN
= 3.3V
V
IN
= 3.6V
V
IN
= 3.0V
80
V
IN
= 3.6V
V
IN
= 3.0V
70
60
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
Efficiency vs. Load
(V
OUT
= 1.5V; L = 4.7μH)
μ
100
90
3.0
(V
OUT
= 1.5V; L = 4.7μH)
μ
DC Regulation
V
IN
= 2.7V
V
IN
= 3.6V
Output Error (%)
2.0
1.0
0.0
-1.0
-2.0
-3.0
V
IN
= 4.2V
V
IN
= 3.6V
Efficiency (%)
80
V
IN
= 4.2V
70
60
50
0.1
1
10
100
1000
V
IN
= 2.7V
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
1126.2006.05.1.1
5